Grid and Workflows

Synonyms

Workflow on grid

Definition

Built on Internet and World Wide Web, the Grid is a new class of infrastructure which supports coordinated resource sharing and problem solving in dynamic, multi-institutional virtual organizations [6, 7]. In a grid architecture, a grid workflow management system is a type of user-level grid middleware. It aims to support large-scale sophisticated scientific and business processes in a variety of complex e-science and e-business applications [7, 10, 12, 15]. Such sophisticated processes are modeled or redesigned as grid workflow specifications at build-time stage by some modeling languages such as Grid Workflow Execution Language (GWEL), Abstract Grid Workflow Language (AGWL), and Martlet [4, 5, 9]. The specifications normally contain a large number of computation, data and/or transaction intensive activities [1, 2, 12]. Then, at run-time instantiation stage, grid workflow instances are created [4]. Finally, at run-time execution stage, grid...